Assessing the oscillation of channel geometry and meander migration cardinality of Bhagirathi River, West Bengal, India

Bag, Rakhohori; Mondal, Ismail; Bandyopadhyay, Jatisankar

doi:10.1007/s11442-019-1618-z

Cited by 33 publications

(15 citation statements)

References 13 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4). This meandering nature of the river extracted and exhibited the past data of this old age river [46]. This bend shows the diminishing kind of radius of curvature, meandering amplitude, and bend width from 1980-2018 (Eq.…”

Section: Meandering Geometrysupporting

confidence: 55%

“…The width of the channel represents the cross-sectional variation of the channel and channel change's prime factor [46]. The trend analysis shows that, from 1980 to the present time, the active channel width decreased by up to 55% (Fig.…”

Section: Active Channel Widthmentioning

confidence: 94%

“…Meander bend's rigidness is quantifying through the radius of curvature [46]. It is an inverse relation with the sinuosity index (Eq.…”

Section: Radius Of Curvaturementioning

confidence: 99%

“…This river system is the lifeline of part of West Bengal and supplying irrigation, industrialisation, and human habitation in an enormous scope. From the twentieth century, several studies are created based on meandering of altering course and effect of the dominant variable of fluvial-dynamics prediction, estimation and migration on the Bhagirathi-Hooghly river system [46][47][48][49][50][51][52][53][54][55]. Due to the diminishing rate of discharge, the nature of this distributary metamorphosed from braiding to the meandering character with modifications through meandering geometry [52,53,56,57].…”

Section: Introductionmentioning

confidence: 99%

“…Earlier, lateral shifting and centerline prediction in a sub-section (Katwa-Mayapur stretch) of the Bhagirathi-Hooghly river have also been discussed. In that case, the LR (Lateral regression) model used as a numerical and statistical model [46]. However, there are lots of uncertainty regarding prediction by the LR model due to unscientific forecast process and procedure.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Estimation and prediction of the oscillation pattern of meandering geometry in a sub-catchment basin of Bhagirathi-Hooghly river, West Bengal, India

Ghosh

Roy

2020

SN Appl. Sci.

View full text Add to dashboard Cite

Meandering is the winding curve or bends in a river within the floodplain area. Though it is a natural process, it affects the populace by the resultant effect of lateral migration with bank erosion in the floodplain area. The present sub-catchment basin (Nabadwip-Kalyani stretch) of the Bhagirathi-Hooghly river is a vital lifeline of southern West Bengal, which offers adequate water for irrigation, industrialisation, and human habitation. This region is experiencing a favourable geomorphic change through river bank line changing with bank erosion and sinuous meandering. Illegal sand mining and monsoonal flood enhances the meandering process and triggers the reduction of settlement and cropland. The present study elaborates on the migration tendencies and meandering geometry of this zone and tries to predict the future river centerline position in a sinuous course. The study area is divided into 30 cross-sections, which reveals the increasing trend of lateral migration and erosion behaviour towards the eastward section of this region. The spatial and temporal shifting of river centerline and resultant migration observes and predicts through the migration coefficient approach (Hasegawa in

show abstract

Section: Meandering Geometrysupporting

confidence: 55%

Section: Active Channel Widthmentioning

confidence: 94%

“…Meander bend's rigidness is quantifying through the radius of curvature [46]. It is an inverse relation with the sinuosity index (Eq.…”

Section: Radius Of Curvaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Estimation and prediction of the oscillation pattern of meandering geometry in a sub-catchment basin of Bhagirathi-Hooghly river, West Bengal, India

Ghosh

Roy

2020

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

Assessment of meander‐bend migration of a major distributary of the Ganges River within Bangladesh

Ferdoush

Biswas

Mondal

2022

River

View full text Add to dashboard Cite

The Arial Khan is an important distributary river of the Ganges River within Bangladesh. The river is meandering, and channel shifting and bend migration are common. This study investigates the bend‐scale morphology of 37 characteristic bends of the river using Landsat imageries, river bathymetries, and hydrological data. The morphological changes of the river are correlated with the temporal shifting of its offtake, which in turn is linked to the dynamic behavior of the river in terms of sinuosity, bend geometry, and bend migration. Alterations in the offtake location, bed elevation, and in‐front bar formation are found to control the flow to the river. The sinuosity varies from 1.62 to 1.95 and is linked to the shifting of its offtake. The lifetimes of the bends increase from upstream to downstream with an average lifetime of 24 years. The radii of the bends vary from upper to lower reaches with an average radius of 921 m. The upper reach is more migration prone, and its average migration rate (108 m/year) is more than twice the other two reaches. A higher migration rate of 70–80 m/year is found for the river during 1981–1999 compared to the rates of 45–50 m/year for the rest of the study periods (1972–2021). An envelope curve depicting the relation between the relative curvature of a bend and its migration rate for the river is also developed. The overall morphology from 1972 to 2021 indicates that a significant increase in sinuosity and a reduction in river width and aspect ratio have occurred. The migration rate has declined slightly and the frequency of bend cutoffs has reduced notably in recent years. Nonetheless, due to the high rates of migration, there exists potential future threat to riverbank erosion in some critical bends, and hence damages to land, property, structure, and project on the vulnerable banks.

show abstract

Spatio-temporal Variation of Channel Migration and Vulnerability Assessment: A Case Study of Bhagirathi River Within Barddhaman District, West Bengal, India

Ghosh

Banerjee

et al. 2022

Geography of the Physical Environment

View full text Add to dashboard Cite

Assessing the oscillation of channel geometry and meander migration cardinality of Bhagirathi River, West Bengal, India

Cited by 33 publications

References 13 publications

Estimation and prediction of the oscillation pattern of meandering geometry in a sub-catchment basin of Bhagirathi-Hooghly river, West Bengal, India

Estimation and prediction of the oscillation pattern of meandering geometry in a sub-catchment basin of Bhagirathi-Hooghly river, West Bengal, India

Assessment of meander‐bend migration of a major distributary of the Ganges River within Bangladesh

Spatio-temporal Variation of Channel Migration and Vulnerability Assessment: A Case Study of Bhagirathi River Within Barddhaman District, West Bengal, India

Contact Info

Product

Resources

About